Boring and turning mill.



PATENTED OCT. 23, 1906. J. RIDDELL. l v BORING AND rlURNINGr MILL.

VAPPLICATION FILED MAY 19, 1905.

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UNITED sTATEs PATENT oinnoE.v

JOHN RlDDELL, SCHENECTADY` NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY.l A CORPORATION NEW YORK.

)BORING AND TURmNG mlLpL.

Specification of Letters Patent.

Patented Oct. 23, 11906.

Original application filed .T une 27 1903 Serial No. 163,319. Divided and this application filed May 19 1905. Serial No. 261,138.

To all whom timmy concern.-

Be it known that I, J OHN'RIDDELL, a citi- Zen of the United States, residing at Schenecwhich may be readily adjusted rotarily upon the bar and also caused to move longitudinally thereof by the same hydraulic means used in adjusting the bar.

In the accompanying drawings, forming a part of this s' ecification, Figure 1 is avertical section o the boring-bar and tool-head. Fig. 2 is a cross-section of the saddle and cross-beam of a boring-mill with the boringbar connected thereto. Fig. 3 is a horizontal section of the bar and tool-head, and Fig.

4 is a front elevation of the upper end of the boring-barv and its supporting-head.

The saddle 1 .is provided in its back side with bearing-surfaces 2 3 4, which engage ways 5 6 7 on the cross-beam 8 of the mill, so that the former may move longitudinally of the latter, and in the front side of the saddle is formed an undercut circular groove 9 on the back side of the swiveled bar-head 11, which is adapted to be clamped in adjusted position by bolts 12, having nuts located in the undercut groove 9. The bar-head 11 has on its front side two clamping-boxes 13 14 for the reception of the boring-bar 15 with removable covers 16 17, adapted to be clamped upon the bar by bolts 18 to hold the bar in adjusted position.

The boring-bar 15 is in the form of a hollow cylinder with key'ways 19 on opposite sides and a stuflin -boX 20 at its upper end. The lower end of t e bar is closed, and in order that it may be rigidly clam ed to the floor or other stationary part a anged collar 21 is removably bolted to its lower end. A piston 22 is arranged within the bar 15 and connected by an aXiall -apertured rod-23, which extends through t e stufling-box 20, to

a cross-head 24. The upper end of the hollow rod 23l is adapted to be connected with means for supplying pressure liquid therethrough, as' will be explained later.

The opposite ends of the cross-head 24 are lapertured for the reception of the upper ends of rectangular rods 25, which are loosely arranged inthe keyways 19 and connect at their lower ends with the quill 26, upon which the tool-head 27 is swiveled. The quill 26 has feathers 28 engaging the keyways 19 in the boring-bar -to prevent rotary movement thereon, and in its outer surface it is turned up to provide a bearing-surface for the sleeve recessed for the reception of the lower ends of the rods 25, whichvare secured removably thereto by set-screws 36. One of the rods 25 is provided with rack-teeth 37, which mesh nected toa larger gear 39,- which meshes with `a pinion 40, fixed to the shaft 41` of a handwheel 42, carried by the head 11 and-provided with the usual clamping member 43. According to this arrangement the rods 25 and the piston 22 carried thereby may read-4 ily be raised by rotation of the hand-wheel 42, and after clamping the latter against retrograde -movement pressure fluid may be turned into the up er portionof the hollow boring-bar and the atter lifted thereby to the desired height, Where it is adapted to be supported by screwing up on the clamping-bolts 12, and after releasing the hand-wheel 42 the tool-head may be fed up and down the boring-bar under control of the pressure fiuid.

do not desire to restrict myself to the particular form or arrangement of parts herein described and shown, since it is apparent that they may be changed and modified without departing from my invention. j

What I claim as neW, and desire to secure by Letters Patent of the United States, is-

l, In aboring and turning mill, the Combination of a cylindrical boring-bar, a sleeve feathered thereto for longitudinal movement, an adjustable tool-supporting shell journaled upon said sleeve, and means to move said shell about said sleeve and hold it in adjusted position.

2. In a borin and turning mill, the oombination of a oy indrical boring-bar, a sleeve feathered. thereto Jfor longitudinal movement and provided With a fixed Worm-Wheel, and an adjustable tool-supporting shell journaled upon said sleeve and provided With a Worm adapted to engage said Worm-Wheel.

3. In a boring and turning mill, the oombination of a hollovv boring-bar, a piston located therein, rods connected to said piston and extending parallel to said boring-bar, and a tool-support mounted to travel upon said bar and connected to said rods.

4. In a boring and turning mill, the oombination of a hollow boring-bar, a piston located therein, a head in which said bar is longitudinally adjustable, a rod provided with a rack and connected to said piston, a tool-support mounted to travel upon said bar and connected to said rod, and a hand-operated Wheel journaled in said head and geared to said rack.

In Witness whereof I have hereunto set my hand this 17th day of May, 1905,

JOHN RIDDELL.

Witnesses:

BENJAMIN B. IIULL, HELEN ORFORD. 

